Answer:
The mass of a tree is primarily carbon.
Explanation:
The carbon comes from carbon dioxide used during photosynthesis.
Answer:
apex refers to the highest point or vertex of a plant stem or root. The shoot apex is where fresh stems, leaves, and other parts of a plant grow after the old parts fall off or dry up.
Explanation:In experiments conducted plants with the apex grows and its height increase while the height of the plant without the apex does not change.In another experiment plant with the apex grows towards the direction of sunlight which is positive phototropic movement and the plant without the apex does not turn towards light.therefore we can conclude there is an effect of the apex on the growth of a plant.
The particles that make up matter are the atoms.
Atoms do not change during a chemical change. They do not either during a physical change.
During a chemical change molecules change but not the atoms. The atoms separate from the original molecules and form new molecules. Then moleculas change but atoms remain being the same before and after the chemical change.
For example, atoms of oxygen in molecules of O2 combine with atoms of hydrogen in molecules of H2 and they form the molecules of water H2O.
The atoms of O in O2 are the same atoms of O in H2O and the atoms of H in H2 are the same atoms of H in H2O. The molecules changed, from H2 and O2 to H2O, but the atoms are the same.
It splits in half, it was 46 chromosomes but now it 23 chromosome, one from each gamete cell, one from mum and dad, makes up 46 chromosomes.
Answer:
Explanation:
Rill erosion is caused by slow movement of water along small channels on bare land with less vegetative cover. Gully erosion creates a deep channels that the surface runoff is further enhanced. The water movement is faster, creating a deeper channels.Apr 16, 2015
